Which of the following will require least force to penetrate the piece

1.	Which of the following will require least force to penetrate the piece of wood?
A.	Sharp iron nail
B.	Blunt Iron rod
C.	Thin sheet of steel
D.	A Hammer
E.	None of these
Answer» B. Blunt Iron rod

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Which of the following will require least force to penetrate the piece of wood?

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